EP 2099733 B1 20130327 - PROCESS FOR THE SYNTHESIS AND SEPARATION OF HYDROFLUOROOLEFINS
Title (en)
PROCESS FOR THE SYNTHESIS AND SEPARATION OF HYDROFLUOROOLEFINS
Title (de)
VERFAHREN ZUR SYNTHESE UND TRENNUNG VON HYDROFLUOROLEFINEN
Title (fr)
PROCÉDÉ DE SYNTHÈSE ET DE SÉPARATION D'HYDROFLUORO-OLÉFINES
Publication
Application
Priority
- US 2007026001 W 20071220
- US 87593006 P 20061220
- US 87593106 P 20061220
Abstract (en)
[origin: WO2008079265A1] A process for the synthesis of fluorinated olefins of the formula CF<SUB>3</SUB>CF=CHX, wherein X is F or H comprising contacting hexafluoropropene with hydrogen chloride in the vapor phase, in the presence of a catalyst, at a temperature in the range from about 200 °C to about 350 °C, wherein the mole ratio of hydrogen chloride to hexafluoropropene is from about 2:1 to about 4:1, separating the 1-chloro-1,2,3,3,3-pentafluoro-1-propene, 1,1-dichloro-2,3,3,3-tetrafluoro-1-propene and hydrogen fluoride products from unreacted hexafluoropropene, and hydrogen chloride by distillation, hydrogenating either the 1-chloro-1,2,3,3,3-pentafluoro-1-propene, 1,1-dichloro-2,3,3,3-tetrafluoro-1-propene or mixture thereof over a catalyst, and dehydrochlorinating the said hydrogenation product to produce either 1225ye or 1234yf.
IPC 8 full level
C07C 17/20 (2006.01); C07C 17/25 (2006.01); C07C 17/354 (2006.01); C07C 19/10 (2006.01); C07C 21/18 (2006.01)
CPC (source: EP)
C07C 17/206 (2013.01); C07C 17/25 (2013.01); C07C 17/354 (2013.01); C07C 21/18 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008079265 A1 20080703; EP 2099733 A1 20090916; EP 2099733 B1 20130327; JP 2010513517 A 20100430
DOCDB simple family (application)
US 2007026001 W 20071220; EP 07867853 A 20071220; JP 2009542912 A 20071220